FWIW, I buy Lakin Lite
Quality, nutritionally complete pelleted horse feed: Lakin Milling Company, Avondale, AZ
Guaranteed Analysis:
Crude Protein (Min)................................................11%
Crude Fat (Min)...................................................0.75%
Crude Fiber (Max)..................................................30%
Ash (Max)...............................................................12%
Calcium (Min).........................................................0.7%
Calcium (Max)........................................................1.7%
Phosphorus (Min).................................................0.18%
Phosphorus (Max)..................................................0.5%
Copper (Min).......................................................15 ppm
Selenium (Min)...................................................0.2 ppm
Zinc (Min)............................................................45 ppm
Vitamin A (Min)................................................300 IU/LB
Ingredients:
Alfalfa hay, bermuda hay, cane molasses, phosphoric acid (feed grade), zinc sulfate, manganese sulfate, copper sulfate, cobalt carbonate, sodium selenite, potassium iodide, vitamin E supplement, vitamin A acetate, vitamin D3 supplement, d-calcium pantothenate, choline chloride, vitamin B12 supplement, riboflavin supplement, thiamin mononitrate, niacin supplement, pyridoxine hydrochloride, folic acid and d-biotin.
The same company offers this:
Estrella Brand
Horse Pellets For Maintenance And Training Of Mature Horses.
This feed is made from clean, dry ground alfalfa hay, cane molasses, and a vitamin-mineral supplement designed for Southwest conditions. Designed for maintenance or lightly worked horses, Estrella Brand is adequate to meet nutritional needs without further supplements, grain, or additional roughage.
Guaranteed Analysis:
Crude Protein (Min)........................................................14%
Crude Fat (Min)................................................................1%
Crude Fiber (Max).........................................................28%
Ash (Max)......................................................................12%
Calcium (Min).................................................................0.8%
Calcium (Max)...............................................................1.7%
Phosphorus (Min)........................................................0.18%
Phosphorus (Max).........................................................0.5%
Copper (Min)............................................................. 15 ppm
Selenium (Min)..........................................................0.2 ppm
Zinc (Min)...................................................................45 ppm
Vitamin A (Min).......................................................300 IU/LB
I find the Lakin Lite keeps the horses healthy even when the quality of the hay goes to pot. I also found that if I feed them hotter pellets, my mare gets semi-psycho. She does MUCH better on bermuda hay supported with the Lakin Lite.
I like it because it is "Guaranteed Analysis". Good luck finding hay around here that is guaranteed to be anything better than straw...